Annales Geophysicae
Annales Geophysicae
ANGEO
Articles | Volume 33, issue 9
Articles | Volume 33, issue 9
https://doi.org/10.5194/angeo-33-1117-2015
© Author(s) 2015. This work is distributed under
the Creative Commons Attribution 3.0 License.
https://doi.org/10.5194/angeo-33-1117-2015
© Author(s) 2015. This work is distributed under
the Creative Commons Attribution 3.0 License.
Articles | Volume 33, issue 9
Regular paper
 | 
14 Sep 2015
Regular paper |  | 14 Sep 2015

Polar cap patches observed during the magnetic storm of November 2003: observations and modeling

C. E. Valladares, T. Pedersen, and R. Sheehan

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Latest update: 13 Dec 2024
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Short summary
We present multi-instrument measurements and multi-technique analysis of polar cap patches observed early during the recovery phase of the major magnetic storm of November 20 2003. During this event, the Qaanaaq imager observed variable airglow brightness of the patches between 20:33 and 20:43UT, probably associated with a large-scale gravity wave. Our numerical results indicate that variations in the airglow intensity up to 265R can be produced by a constant 70m/s downward vertical wind.
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